/*
 * Copyright 2009-2010 WorldWide Conferencing, LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.json4s

import org.scalacheck.*
import org.scalacheck.Arbitrary.arbitrary
import org.scalacheck.Gen.*

trait NodeGen {
  import Xml.XmlElem
  import Xml.XmlNode
  import scala.xml.Node

  def genXml: Gen[Node] = frequency((2, delay(genNode)), (3, genElem))

  def genNode = for {
    name <- genName
    node <- Gen.containerOfN[List, Node](children, genXml) map { seq => new XmlNode(name, seq) }
  } yield node

  def genElem = for {
    name <- genName
    value <- arbitrary[String]
  } yield new XmlElem(name, value)

  def genName = frequency((2, identifier), (1, const("const")))
  private def children = choose(1, 3).sample.get
}
